package com.atguigu.gulimall.product.exception;


import com.atguigu.common.exception.BizCodeEnum;
import com.atguigu.common.utils.R;
import lombok.extern.slf4j.Slf4j;
import org.springframework.validation.BindingResult;
import org.springframework.web.bind.MethodArgumentNotValidException;
import org.springframework.web.bind.annotation.ControllerAdvice;
import org.springframework.web.bind.annotation.ExceptionHandler;
import org.springframework.web.bind.annotation.RestControllerAdvice;

import java.util.HashMap;
import java.util.Map;


/**
 * 集中处理所有异常
 */
@Slf4j
@RestControllerAdvice(basePackages = "com.atguigu.gulimall.product.controller")
public class GulimallExceptionControllerAdvice {

    /**
     * 集中处理 数据校验 异常
     * @param e
     * @return
     */
    @ExceptionHandler(value = MethodArgumentNotValidException.class)
    public R handleValidException(MethodArgumentNotValidException e) {
        log.error("数据校验出现问题，异常信息为：{}，异常类型为：{}", e.getMessage(), e.getClass());

        BindingResult bindingResult = e.getBindingResult();
        Map<String, String> map = new HashMap<>();
        if (bindingResult.hasErrors()) {
            bindingResult.getFieldErrors().forEach(error -> {
                map.put(error.getField(), error.getDefaultMessage());
            });
        }
        return R.error(BizCodeEnum.VALID_EXCEPTION.getCode(), BizCodeEnum.VALID_EXCEPTION.getMsg()).put("data", map);
    }


    /**
     * 集中处理所有异常
     * @param e
     * @return
     */
    @ExceptionHandler(value = Throwable.class)
    public R handleException(Throwable e) {
        log.error("错误：", e);
        return R.error(BizCodeEnum.UNKNOW_EXCEPTION.getCode(), BizCodeEnum.UNKNOW_EXCEPTION.getMsg());
    }
}


































